Nelson t



N. T. SHORTS.

STOPCOCK 0R VALVE.

MPucATloN FILED ocr. sq. |911.

Lig. A .Patented Nov. 25,1919.

@Vi/14 @sono STOPCOCK OR VALVE.

Specification of Letters Patent.

Patented Nov. 25, 1919.

Application lend^ October 30, 1917. Serial No. 199,319.

To all whom 'it may concern:

Be it known that I, NELSON T. SHORTS, a citizen of the United States,residing at Fern, in the county of Clarion, State of Pennsylvania, haveinvented a new and useful Stopcock or Valve; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to the art of valves and particularly to animproved stop cock or plug valve.

Heretofore, it has been found that when hammering on the core of thevalve to loosen it (it having become so tightened from the lack offrequent useand the need of oil), and owing to the high pressure, thevalve or core has become broken. The break is usually at the threadedend of the core, and when this end breaks off, the remaining portion ofthe valve blows out of its casing with terrific force, thereby making itvery dangerous for the person operating the valve, and also causing agreat deal of inconvenience. For these reasons and the fact that thevalve or core of the old style stopcock is extremely easy to' becomebroken, for the further reason that it is constructed of metal casting,such stop-cocks in a great many instances are condemned, and rejected,when submitting plans for the installation of oil and gasolene plants,and water distributing systems and plants, etc.

Therefore, one of the objects of the invention is to provide an improvedstop-cock of the plug type, that will not be condemned by hydraulicengineers, etc.

A further object of the invention is the provision of a stop-cock havingan opening in the wall of the casing thereof for the reception of aplug, said opening being designed, when its plug is removed and the'valve or core closed, to give vent to the fluid, that may collect in thetransverse opening of the plug, thereby preventing freezing of the wateror other fluid, which would chill the plug or core so that a sudden jaror twisting of the same will cause it to break.

A further object of the inventionv is to provide a valve core or plughaving an extension cast in the lower end of the core or plug, in orderto be engaged by a suitable securing means, to hold the plug or coresuitably rotatably in the casing.

A further object of the invention is to provide an extension for thecore or plug constructed of any suitable pliable metal, such as pliableiron or brass or the like, and which extension, should the plug or corebecome` damaged otherwise than disclosed above, may be removed, and castin another plug or core. Y Tn practical field the details ofconstruction may y necessitate alterations falling within the scope ofwhat is claimed.

The invention comprises further features and combination of parts ashereinafter set forth shown in the drawings and claimed.

In the drawings Figure l is a view in side elevation of the improvedvalve constructed in accordance with the invention.

Fig. 2 is a vertical sectional view through the same. Y v

Fig. 3 is a horizontal sectional view on line 3-3 ofFig. l. Y

Fig. 4 is a vertical sectional view on line 4 4 of Fig. 1. i

Fig. 5 is a detail perspective view of the lower end of the plug orcore.

Fig. 6 is a detail plan view of a washer for the lower end ofthe core orplug.

Referring more especially to the drawings 1 designates the casing of thevalve, which may be constructed of any suitable metal, preferably castiron metal, and may have any suitable configuration or shape, preferablyas shown in the drawings. This casing at its opposite ends is providedWith passages 2 and 3, either of which may be used as the inlet oroutlet passage. However, the outer end 'of each vpassage is providedwith threads 4, to be engaged by the exterior threads of an adjoiningpipe section. Constructed through the casing l between the adjacent endsof the passages 2 and Sand at right angles thereto is a conical chamber5, for the reception of a taperingY valve-plug or core v6, which may becon structed of any suitable metal, preferably cast iron metal. Thelarger end of the plug or core is provided with a reduced extension 7,preferably rectangular incross section, to receive any suitable deviceor conventional form Yof handle (not shown),fwhereby the plug or coremay be turned, whereby its transverse passage 8 may register with thepassages and 3, or disposed at right angles to said passages 2 and .3,to cut on the fluid. The wall of the casing l on'one side is vprovidedwith an opening 9, the larger portion y 1 l Y ,A 1,322,964

10 of which is threaded, for the reception of the threaded plug 11, theouter end of which has an extension 12, preferably reel tangular incross section, to receive a suitable wrench or the like, whereby thethreaded` plug 11-may be moved, when such isnecessary. At all times,preferably during freeZY ing weather and when the plug or core has beenturned to dispose its passage at right angles to the passages 2 and 3,said pluo' 11 is removed, in order to drawfoflf the duid or water thatis collected in the opening or.

y,inner'end of which is supplied with a head 14, preferably rectangularin cross section. The plug or core 6 is designed to be constructed bycasting the same, and after which its outer conical or tapering surfaceis designed to bemachined7 so that the plug or core will closely androtatably lit the tapering chamber 5. As the'core or plug 6 isconstructed, theheaded end portion of the separable eXtension-13 is caston the interior of the tapered end of said plug or core. By means of thehead 14, the extension 13 (which may be constructedfof any vsuitablemetal, preferably pliable iron 'or.brass) is prevented from revolubleand longitudinal or axial movement. The valve plug or core has anintegral reduced extension 15, which' extends beyond the valve casing,and engaging said extension 15 is a washer 16, which engages rotatablyflat against one end ofthe valve casing 1, and is held on said extension15 by they nut 17, which is threaded upon the separable extension 13.rIhe wall of the opening 18 is provided with a flat surface 19, whichengages a flat surface 20 of the extension 15, thereby causing thewasher 1 6 to rotate with the valve plug or core 6. Plugs of valves ofthis type are constructed entirely of cast iron, therefore when theybecome chilled or receive a sudden jar, particularly from a hammer orother tool they are easily broken. lIt is common practice for mechanicswhen a plug valve becomes stuck to tap the same on the head 7 whichtapping operation is designed to loosen the plug. However, if the plugis chilled as is generally the case where the same is used inpipe linesout ofdoors', such hammering action causes the depending threadedintegral lug to become what is known as bounced olf. By making thedepending Alug of a metal such as brass or wrought iron, such as vkshownat 13, which` metal is ductile and isnotrendered brittlel by excessivelow temperatures, the hammering action upon the end 7 of the plug valvewill not cause the breaking o of the cle-- pending threaded lug, for thereason that in the case of brass or other .ductile metal there is acertain amount of stretch.

The invention having been set forth what is claimed as new and useful is1 In a stop-cock or plug valve, a valve casing having a fluid passageanda conical chamber extending at right angles to said passage, atapering `valve plug or core in said chamber,'the tapered end of theplug or core having a threaded extension and Vprovided with a transversepassage adapted to register with the fluid passage of said casing, a nuton said threaded extension, said threaded extension being embedded inthe lower tapered end of said core or plug and being constructed of ametal having a greater yielding tendency than the core, whereby 'theextension may stretch and be prevented from becoming broken when chilledincident to shocks `of said'valve.

v2. In a stop-cock or plug valve, afcasing havingy a fluid passage andprovided with a tapering chamber at right angles to the said passage, atapering valve core or plug in the Y chamber and providedl withV apassage adapted to register with the fluid passage ofthe casing, thetapered end of the core Y or plug having an extension adapted to giveVor'stretchincident to the plug or core receiving shocks when chilled, anut threaded to said extension to hold the core in its chamber, and aplug closed opening in the wall of the casing, to draw 4olf thefluidthat may collect in the space or passage of the core when closed. A

3. In a stop-cock or plugV valve, a casing having a fluid passage andprovided witha tapering chamber at right 'angles' to said passage, atapering valve core or plug in the chamber and provided with ar passageadapted to register with the fluid passage of the casing, said core orplug being constructed of cast iron metal and a brass or wrought ironbolt having its headed end cast in the tapered end of the core or plug,thereby constituting an extension, a nut threaded on said extension tohold the core In testimony whereof I have signediny name to thisspecication in the two subscribing witnesses.

Y -NELsoN T. srionrs.

presence of i Witnesses:

FRANK L. CRooKs, A. D. SHORTS.

